The present application condition and development trend of artificial freezing method in subway tunnel were described.
阐述了人工冻结法在地铁隧道施工中的应用现状与发展趋势。
The paper describes the characteristics of transmission, application, structure, type and Standard of the Synchronous belt and the present production condition is also introduced as well.
综述了同步带的传动特点、应用、结构、种类、标称方法及标准，并对同步带的生产状况作了介绍。
Objective To investigate the present condition and tendency of antidepressant application.
目的了解抗抑郁药应用状况及变化趋势。
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